The sun delivers light and heat to the earth, so why does passing through solar panels produce electricity? Nowadays we have learned to use this energy, but this query remains unanswered. This article will solve this doubt for you.

Principle of solar panel power generation:

The principle of power generation of solar panels is based on the photoelectric effect of semiconductors, that is, sunlight shines on the panel photons are absorbed and excited electrons, electrons are released from silicon atoms due to the absorption of energy, resulting in electron-hole pairs. The accumulation of heterodyne charge appears at both ends of the battery to form a current.

The special structure of silicon atoms makes silicon crystals particularly sensitive to sunlight. When there is no sunlight, the electrons in the silicon atoms are like people who are starving and have no strength, and they all sit honestly in their positions, and no current is generated, and no electricity is generated. After sunlight, these electrons will absorb the sun’s energy, like a full stomach, electrons into restless free electrons. Free electrons will run amok, but free electrons directional movement, only when the current will be generated.

How can free electrons move directionally? This requires the battery cell in the P-N junction play a role. P area of free electrons by the N area of the “single” electron attraction will be directed to move, which in turn generates current. P area of free electrons removed. After the remaining seat is the so-called positive charge hole, the N area with a large number of free electrons. At this time, the P and N regions have a potential difference between the connected wire and load, the restless free electrons will flow along the wire from the N region to the P region, the current is also formed. This completes the conversion from solar energy to electrical energy.